• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SPE/DOE symposium on improved oil recovery >Imporved crude oil recovery by alkaline flooding enhanced with microbial hydrocarbon oxidation
【24h】

Imporved crude oil recovery by alkaline flooding enhanced with microbial hydrocarbon oxidation

机译：通过碱驱提高了原油的采收率，微生物碳氢化合物氧化提高了采收率

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

One low-cost improved oil recovery (IOR) technology making significant advances is reservoir flooding with mixtures that contain alkalis and synthetic surfactants (AS). Oil recovery can be further enhanced by addition of polymer to the aqueous mixture of alkali and surfactant (ASP). The neutralization of acidic oil components and formation of soap at the oil-water interface result in a reduction in interfacial tension (IFT) between the aqueous and oil phases. The process described here combines ASP with microbial technology for an innovative and cost effective technique that extends the applicability to other crude oils that may not be amenable to ASP alone. The process is based on the fact that microbes can modify crude oils and produce acid components, such as carboxylic acids, which can be neutralized at the oil/water interface by alkaline mixtures. The acid content of crude oil samples was increased in laboratory bottle tests using hydrocarbon oxidizing microorganisms, such as Arthrobacter sp. Spinning drop interfacial tension measurements between microbially treated oil and alkali/surfactant mixtures were lower than for abiotic controls (samples without microbes). For crude oil treated with Arthrobacter sp., IFT was reduced from 0.327 mN/m (abiotic control) to 0.0733 mN/m. Various strains of microorganisms were screened to begin optimizing the process, and corefloods were performed to quantify oil recovery. Laboratory coreflood experiments using microbial flooding and ASP flooding methodology showed that oil recovery was better with the combination of ASP oil recovery and microbial flooding oil recovery than with either system alone. The increased oil recovery by teh microbial pretreatment recovery method correlated with an increase in the acid content of the microbially treated oil.
机译：一项取得重大进展的低成本改进的采油（IOR）技术是用含碱和合成表面活性剂（AS）的混合物进行油藏驱替。通过将聚合物添加到碱和表面活性剂（ASP）的水性混合物中，可以进一步提高采油率。酸性油成分的中和作用和在油水界面形成的肥皂导致水相和油相之间的界面张力（IFT）降低。此处描述的过程将ASP与微生物技术相结合，形成了一种创新且具有成本效益的技术，将其适用性扩展到了其他可能无法单独使用ASP的原油。该方法基于这样一个事实，即微生物可以改性原油并产生酸成分，例如羧酸，可以通过碱性混合物在油/水界面中和这些酸成分。原油样品的酸含量在实验室瓶装试验中使用烃类氧化微生物（如节杆菌属）增加了。经微生物处理的油与碱/表面活性剂混合物之间的纺丝滴界面张力测量值低于非生物对照样品（不含微生物的样品）。对于用节杆菌属细菌处理过的原油，IFT从0.327 mN / m（非生物对照）降低到0.0733 mN / m。筛选了各种微生物以开始优化工艺，并进行了岩心驱油以定量采油。使用微生物驱油和ASP驱油方法进行的实验室岩心驱油实验表明，ASP采油和微生物驱油采油相结合的采油效果好于任何一个系统。通过微生物预处理回收方法增加的油回收率与经微生物处理的油中酸含量的增加相关。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号